Switch-frog.



J. W. WALLS.

SWITCH FROG. APPLICATION FILED JULY 20. 1908.

Patented Jan. 12

JAMES W WALLS, OF TRINIDAD, COLORADO.

SWITCH-FROG.

Specification of Letters Patent.

Patented Jan. 12, 1909.

, Application filed July 20, 1908. as No. 444,46.

T 0 an whom it may concern:

Be it known that 1, JAMES W. WALLS, citizen of the United States, residing at Trinidad, county of Las Animas, and State of Colorado, have invented certain new and useful Improvements in Switch-Frogs, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a switch frog and particularly to a pivotal mounting thereof.

The invention has for an object to provide a novel and improved construction of pivotal mounting for the movable rail stub switch frog by which a firm bearing for the frog rail is obtained and the limit of travel thereof positively determined so as to insure safety and accurate alinement as the frog is shifted.

Other and further objects and advantages e hereinafter fully set forth and the novel features of the invention defined by the ap ended claims.

In t e drawing:- 1 igure 1 is a plan showing the application of the invention and its connections; Fig. 2 is a plan of the frog; Fig 3 is a longitudinal section thereof, Fig 4 is a section on line 4-4 Fig 2, and Fig. 5 is a section on line 5-5 Fig. 2.

Like numerals refer to like parts in the several views ofthe drawing.

he numeral 10 designates the main line rails which are supported" on ties in the usual manner, and 11 the switch rails also mounted in the usual manner. The free end of one ofthe switch rails is provided with a throw rail 12, and the o posite main line rail is provided with the tirow rail 13, these being connected together by the shifting bar 14 in the usual manner to be siniultaneously moved by, any desired conncc tions, for instance, the switch stand at 15. The bar 14 is connected to one arm of the bell crank or angle lever 16 which is pivotally mounted at 17, and the opposite arm thereof connected to the shifting rod 18 extending' to the frog connection. The connection of the bar 14 and the shifting rod 18 with. the crank lever 16 is by means of a pivotal joint of any desir d (lli-tI'ttCbGl. The rod 18 is pivotalh connected at 19 with the arm 20 of the T lie-yer 21 which is ivoted at 22. Each of the lateral arms of t iis T lever is attached to the frog by means of the connotations 23 so as to shift both ends thereof simultaneously in opposite directions.

The frog rail 25 is mounted u on a base plate 26 firmly supported upon t 1e ties and secured thereto. This base plate is provided with a-central circular de ression or pivoting seat 27 and at each em is formed with the flange 28 disposed beneath the adjacent track rails so as to provide a firm bearing at the point of alinement with the frog. The base plate is also provided with car lugs 29 above this-flange to engage the flanges of the track rails and firmly support them against lateral movement upon the plate 26. Disposed upon the u per face of the plate 26 is the rail l plate 30 w lch extends longitudinally theme and is provided at its midlcngth with a curved pivoting de ression 31 seatedin the dc ression 27 01 the base plate so as to form a road, firm pivotal bearing beneath the longitudinal center of the frog rail 25. At plate 30 depending lugs apertures 33 in the base plate and are attached to the connections 23 for shifting the frog. The rail 25 is bolted or otherwise secured to the plate 30, and plate is positively limited 32 extend through by the extent of the apertures 33 through which the throw lugs 32 extend For the purpose of preventin any vertical movement or play of the rail late upon its base a cross stra 34 is provid iad and extends laterally of the base plate and rail plate, being deflected at 35 to ass beneath the rail and ermit the oscilatory movement of the rail plate u on the base, While reventing any vertica movement thereof This cross strap is attached to the base by any desired means, as at 36 and also to the tie or foundation at 37 so as to assist in retaining the base plate upon its foundation.

For the purpose of controlling a dcrailcr 38 in the switch track, a connection 39 we tends from one of the lugs carried by the frog rail to a bell crank 40 suitably mounted and connected I) rod 1-1 to a bell crank 42 for the dorailrr so t mt when the frog is in alineinent with the main line the derailer is open, as shown in Fig. 1, and will be automatically closed when the frog is shifted to the switch track.

111 the operation of the invention, it will is seen that when the throw rails are shift. d the frog is also thrown upon its pivot to connect with the switch track and the derailer therein closed, while when the parts are in main line connection, as shown in 1, the

each end of the railthe travel of this derailer upon the switch is open and the throw points disposed in alinement for the main line. The mounting for the frog pro vides the solid iron base with a broad pivot -for tho rail plate and supports for the connecting rails so that the parts are retained in aifnement, while the travel of the frog stub is positively governed thus insuring safety and accuracy in the shifting thereof. The base plate for the frog and the rail plate therefor are held against vertical moyement by means of the cross bar so that the invention presents an eiiicient and economically construoted'iorm of safety switch having an automatically operated frog and derailer in corn tion therewith.

having described my invention and set forth its merits, what 1 claim and desire to secure by Letters Patent is I 1. In a switch frog, a base plate having a central concave depression and horizontal end portions, a rail plate provided with a central ficircular depression pivoted in the depresion of the base plateand with end portioris. rest' upon those of the base, and means for shifting said rail plate.

2. In a switch frog, a base plate having a central circular depression, a rail plate provided with a central circular depression pivoted in the depression of the base plate, and de ending lugs from the opposite'ends of said up plate extended through slots in th base ate. p 3. In a switch fi rgg, a base plate having a central circular depression, a-rail plate provided with a central'circular depression pivoted in the depression of the base plate, and

a cross bar extended into the depression of the rail plate and secured at its opposite ends to the base plate.

4. In answitch frog, a flat base plate provided witha central: pivoting depression below the level of the adjacent end portions and rail supporting flanges at then posite' ends thereo a rail plate prdvided wit a frog rail and pivotally mounted upon said base.-

5. In a switch frog, a base plate provided with a -central pivoting depression and rail supporting flanges at the opposite ends thereof, a rail plate provided with a frog rail and pivotally mounted upon said base, and holding lugs extended from the base to engage the rails supported upon the flanges.

6. In a switch frog, a base plate pnovided with a central pivoting depression and rail supporting flanges at the opposite ends thereof, a rail plate provided with a frog rail and pivotally mounted upon said base, holding lugs extended from the base to engage the rails supported upon the flanges, and depending lugs from said rail plate extending through slots in the base plate.

7. In a switch frog, a base plate provided with, a central pivpting depression and rail supporting flanges at the o posite ends thereof, a rail plate provided with a frog rail and base plate, and means'at the free ends of said bar for securing the base plate to a support. 8. In a switch, a switch frog comprising a pivoted rail plate having lugs at its opposite ends, an operatifig lever having connections with each of said lugs, a derailer, and a rod extending from one of said lU S and having operating connections with sai derailer.

9. In a switch, a switch stand, throw points connected therewith, a T-lever con nected for operation in unison. with saidv throw points, a switch frog comprising a pivoted rail plate having l gs at its op osite ends, connections from the arms of t e T- ten lin from one of said hrgs and having operating connections with said derailer.

In testimony-whereof I affix my signature in presence of two witnesses.

JAMES W. WALLS. Witnesses:

EVERETT BELL, Maren lVlANSBACH.

lever to said higs, a derailer, and a rod ex- 7 

